Re:Raspberry Pi 5
by extraduder_ire on Thursday September 28, 2023 @01:47PM
(#37693077)
It would be amusing if they used a pi2040 chip to drive the IO pins on such a board. I'm sure there's cheaper chips out there to do this.
[ Parent
| on HN ]
It might make sense given pi2040’s PIO capabilities. Additionally, the RPi5’s io chip, RP1, might have some similar tricks inside.
The Raspberry Pi Pico has a fascinating peripheral known as the “Programmable Input/Output” (PIO). This device allows us to write very simple assembly programs to emulate a number of different peripherals and communication protocols.
https://www.digikey.com/en/maker/projects/raspberry-pi-pico-...
RP1 is our I/O controller for Raspberry Pi 5, designed by the same team at Raspberry Pi that delivered the RP2040 microcontroller, and implemented, like RP2040, on TSMC’s mature 40LP process.
https://www.raspberrypi.com/news/introducing-raspberry-pi-5/